Believe what you like.

Same as all Mathematicians, textbooks and proofs.

Including that all mathematics communication and education is flawless and incapable of any ambiguity, apparently

Yep

made you decide that insulting my intelligence was the best way to have this conversation

you were the one who decided to refuse to look in Maths textbooks 🙄

Actual math educators, on the other hand, are moving away from using the “PEMDAS” (or “BEDMAS”) acronyms

No they aren't.

because of the ambiguity inherent in them

There isn't any ambiguity in them 🙄

using “GEMS” (or “GEMA”) instead

Nope. No Maths textbooks are using that.

the acronym must not be all that useful.

And if that is true, then GEMA would be completely useless 🙄

You’re trying to make me mad,

No I'm not.

Again–have a good one

Again, you still couldn't provide a shred of evidence to support your argument